1248266540 has 24 divisors (see below), whose sum is σ = 2665792080. Its totient is φ = 490843328.

The previous prime is 1248266527. The next prime is 1248266543. The reversal of 1248266540 is 456628421.

It is a junction number, because it is equal to n+sod(n) for n = 1248266494 and 1248266503.

It is not an unprimeable number, because it can be changed into a prime (1248266543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527747 + ... + 530106.

It is an arithmetic number, because the mean of its divisors is an integer number (111074670).

Almost surely, 2^1248266540 is an apocalyptic number.

1248266540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1248266540 is an abundant number, since it is smaller than the sum of its proper divisors (1417525540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1248266540 is a wasteful number, since it uses less digits than its factorization.

1248266540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057921 (or 1057919 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 1248266540 is about 35330.8157279166. The cubic root of 1248266540 is about 1076.7191644769.

The spelling of 1248266540 in words is "one billion, two hundred forty-eight million, two hundred sixty-six thousand, five hundred forty".